Ruby (Corundum)
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
Category
Browse synthetic (not a natural rock) specimens identified by the Rock Identifier community.
Ruby (Corundum)
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
Sodium Polyacrylate (Superabsorbent Polymer)
Sodium Polyacrylate [-CH2-CH(COONa)-]n
Note on Image Identification: Textile
N/A (Anthropogenic material)
Blue Sapphire
Corundum (Al2O3)
Painted River Rock
Anthropogenic-modified Siliciclastic Sedimentary Rock
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Blue Opal Inlay (Simulated/Lab-created)
Hydrated Amorphous Silica (SiO2·nH2O) with polymer resin
Hematite
Iron(III) oxide (Fe2O3)
Strawberry Quartz
Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)
Blue Sapphire
Corundum (Al2O3)
Emerald
Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium
Obsidian
Obsidian (Volcanic Glass) SiO2 (70% or more)
Staurolite (Cross Stone)
Staurolite (Fe2+2Al9Si4O23(OH))
Diamond
Native Carbon (C)
Diamond
Diamond (C)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities and natural radiation
Blue Topaz
Topaz [Al2SiO4(F,OH)2]
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
Blue Cracked Quartz (Dyed Fire Crackle Quartz)
Silicon Dioxide (SiO2) with synthetic dye
Hematite
Iron(III) oxide (Fe2O3)
Diamond (faceted)
Diamond (Pure Carbon, C)
Jadeite and Mixed Gemstones (Ruby, Sapphire, Emerald)
Jadeite (NaAlSi2O6), Corundum (Al2O3), Beryl (Be3Al2(Si6O18))
The user-provided image does not contain a rock or mineral specimen
Man-made Synthetic Material (Not a rock or mineral)
Polyester (Polyethylene terephthalate) / Faux Fur
Sapphire (likely blue synthetic sapphire or blue glass in a ring)
Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.
Build-A-Bear Plush (Non-Geological)
Polyester fibers (C10H8O4)n and Synthetic Polymers
Smoky Quartz
SiO2 (Silicon Dioxide)
Smoky Quartz (with Druzy/Polished Edge)
Smoky Quartz (Silicon Dioxide, SiO2)
Cultured Marble (Synthetic)
Polymer-matrix composite (typically calcium carbonate in polyester resin)
Oak-grain Laminate (Industrial/Decorative Furniture Finish)
Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)
Silicon Carbide (Carborundum)
Silicon Carbide (SiC)
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Clear Quartz crystals on a Matrix base (Geode fragment)
Silicon Dioxide (SiO2)
Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
Ring with an Orange Inlay
N/A (Man-made object)
White Sapphire
Corundum (Al2O3)
Synthetic Resin / Plastic Figurine
Synthetic Polymer (Copolymer of Polyethylene or Resin)
Goldstone (Red/Brown)
Aventurine Glass (SiO2 with Copper inclusions)
Goldstone
Aventurine glass (Synthetic glass with copper inclusions)
Amber
Succinite (fossilized tree resin)
Opalite
Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)